Wash the zucchini and grate them.
Place them in a colander, add 1 tsp of sea salt, and stir.
Let sit for 30 minutes to get out most of the liquid from the zucchini.
Slice thinly the onion and garlic clove. In a large bowl, mix the flour, baking powder, and salt.
Take a handful of zucchini, squeeze the liquid out and place them in the bowl (repeat until you have no zucchini left).
Stir well to have everything covered with the flour mix.
Put a saucepan on medium heat, add some oil and place a few tablespoons of the zucchini to make a fritter.
Cook until both sides are golden.
Serve and enjoy